Properties of the Number 91998

Ninety-One Thousand Nine Hundred Ninety-Eight

Basics

Value: 91997 → 91998 → 91999

Parity: even

Prime: No

Previous Prime: 91997

Next Prime: 92003

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 19 × 269

Divisors: 1, 2, 3, 6, 9, 18, 19, 38, 57, 114

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10110011101011110

Octal: 263536

Duodecimal: 452A6

Hexadecimal: 1675e

Square: 8463632004

Square Root: 303.3117208417769

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number A(n,k) of n-element subsets of [k·n] whose elements sum to a multiple of n. Square array A(n,k) with n, k >= 0 read by antidiagonals. A304482

Number of n-element subsets of [3n] whose elements sum to a multiple of n. A318431

Number of n X 5 binary matrices under row and column permutations and column complementations. A56204

Number of length n 1..(4+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal. A254214

Numbers that are congruent to {1, 11} mod 12. A91998

Number of (n+2)X5 binary arrays avoiding patterns 001 and 010 in rows, columns and nw-to-se diagonals. A202893